On Thu, 10 Apr 2014, Bjorn Helgaas wrote: > On Sat, Mar 29, 2014 at 6:14 PM, Parag Warudkar <parag.lkml@xxxxxxxxx> wrote: > >> On Sat, Mar 29, 2014 at 09:41:20AM -0700, Linus Torvalds wrote: > > > >>> Parag, can you add a WARN_ON_ONCE() to that message, so that we see > >>> what the call chain is for it. > > Parag, did you ever try this? > Below is the output of WARN_ON_ONCE(1) in drivers/pci/setup-res.c. Parag [ 339.142257] ACPI: \_SB_.PCI0.RP01: Bus check in hotplug_event() [ 339.142293] ACPI: \_SB_.PCI0.RP04: Bus check in hotplug_event() [ 339.142420] pci_bus 0000:03: Allocating resources [ 339.142437] pci 0000:02:00.0: bridge window [io 0x1000-0x0fff] to [bus 03] add_size 1000 [ 339.142443] pci 0000:02:00.0: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 03] add_size 200000 [ 339.142448] pci 0000:02:00.0: bridge window [mem 0x00100000-0x000fffff] to [bus 03] add_size 200000 [ 339.142454] pci 0000:02:00.0: res[14]=[mem 0x00100000-0x000fffff] get_res_add_size add_size 200000 [ 339.142456] pci 0000:02:00.0: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000 [ 339.142457] pci 0000:02:00.0: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000 [ 339.142459] ------------[ cut here ]------------ [ 339.142467] WARNING: CPU: 7 PID: 4071 at drivers/pci/setup-res.c:255 _pci_assign_resource+0x1a0/0x1c0() [ 339.142471] Modules linked in: xt_TCPMSS cuse ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables bridge stp llc snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic rfcomm bnep bluetooth binfmt_misc i915 joydev x86_pkg_temp_thermal intel_powerclamp kvm_intel snd_hda_intel kvm snd_hda_controller snd_hda_codec hid_logitech_dj usbhid snd_hwdep hid nls_iso8859_1 snd_pcm video drm_kms_helper snd_seq_midi snd_seq_midi_event drm snd_rawmidi crct10dif_pclmul crc32_pclmul hp_wmi sparse_keymap ghash_clmulni_intel ppdev snd_seq aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_seq_device psmouse snd_timer snd microcode mei_me serio_raw wmi mei lpc_ich parport_pc soundcore i2c_algo_bit tpm_infineon mac_hid coretemp lp parport e1000e ptp ahci pps_core libahci [ 339.142976] CPU: 7 PID: 4071 Comm: kworker/u16:2 Tainted: G W 3.14.0+ #4 [ 339.142978] Hardware name: Hewlett-Packard HP Z230 Tower Workstation/1905, BIOS L51 v01.18 01/23/2014 [ 339.142981] Workqueue: kacpi_hotplug acpi_hotplug_work_fn [ 339.142983] 0000000000000009 ffff88044378bac0 ffffffff81717fb4 0000000000000000 [ 339.142985] ffff88044378baf8 ffffffff8106534d ffff8804451a8658 000000009f200000 [ 339.142987] ffff8804451a8000 ffff880445553400 0000000000001000 ffff88044378bb08 [ 339.142989] Call Trace: [ 339.142994] [<ffffffff81717fb4>] dump_stack+0x45/0x56 [ 339.142997] [<ffffffff8106534d>] warn_slowpath_common+0x7d/0xa0 [ 339.142999] [<ffffffff8106542a>] warn_slowpath_null+0x1a/0x20 [ 339.143002] [<ffffffff813a1280>] _pci_assign_resource+0x1a0/0x1c0 [ 339.143005] [<ffffffff815fa1d0>] ? powercap_register_zone+0x650/0x650 [ 339.143007] [<ffffffff813a15ec>] pci_assign_resource+0xac/0x240 [ 339.143012] [<ffffffff814810fd>] ? dev_printk+0x4d/0x50 [ 339.143014] [<ffffffff813a251c>] assign_requested_resources_sorted+0x6c/0xd0 [ 339.143017] [<ffffffff813a27f2>] __assign_resources_sorted+0x272/0x450 [ 339.143019] [<ffffffff813a2bc5>] ? __dev_sort_resources+0x1f5/0x270 [ 339.143023] [<ffffffff8170c0e1>] __pci_bus_assign_resources+0x61/0x110 [ 339.143025] [<ffffffff8170c5c4>] enable_slot+0x164/0x300 [ 339.143030] [<ffffffff8148e67c>] ? __pm_runtime_resume+0x5c/0x80 [ 339.143033] [<ffffffff813b55e8>] acpiphp_check_bridge.part.7+0xc8/0xf0 [ 339.143035] [<ffffffff813b5ec0>] acpiphp_hotplug_notify+0x170/0x1f0 [ 339.143037] [<ffffffff813b5d50>] ? acpiphp_post_dock_fixup+0xc0/0xc0 [ 339.143040] [<ffffffff813e1a09>] acpi_device_hotplug+0x3a0/0x3ed [ 339.143042] [<ffffffff813dbbb0>] acpi_hotplug_work_fn+0x1e/0x29 [ 339.143047] [<ffffffff81080cf2>] process_one_work+0x182/0x450 [ 339.143049] [<ffffffff81081ab1>] worker_thread+0x121/0x410 [ 339.143051] [<ffffffff81081990>] ? rescuer_thread+0x3e0/0x3e0 [ 339.143053] [<ffffffff81088372>] kthread+0xd2/0xf0 [ 339.143055] [<ffffffff810882a0>] ? kthread_create_on_node+0x190/0x190 [ 339.143058] [<ffffffff8172903c>] ret_from_fork+0x7c/0xb0 [ 339.143060] [<ffffffff810882a0>] ? kthread_create_on_node+0x190/0x190 [ 339.143061] ---[ end trace d0c4e4d8d8734d92 ]--- [ 339.143064] pci 0000:02:00.0: BAR 14: can't assign mem (size 0x200000) [ 339.143066] pci 0000:02:00.0: BAR 15: can't assign mem pref (size 0x200000) [ 339.143068] pci 0000:02:00.0: BAR 13: can't assign io (size 0x1000) [ 339.143070] pci 0000:02:00.0: BAR 14: can't assign mem (size 0x200000) [ 339.143072] pci 0000:02:00.0: BAR 15: can't assign mem pref (size 0x200000) [ 339.143073] pci 0000:02:00.0: BAR 13: can't assign io (size 0x1000) [ 339.143075] pci 0000:02:00.0: PCI bridge to [bus 03] [ 339.143104] pci 0000:02:00.0: no hotplug settings from platform [ 339.143105] pci 0000:02:00.0: using default PCI settings [ 339.143128] ACPI: \_SB_.PCI0.RP05: Bus check in hotplug_event() [ 339.143300] done. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
